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APPLICATION
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For single or dual fired burners, pilot ignited or direct ignited continuous duty.
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One basic model meets various European standards.
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ED510 message center indicating in English, French, Dutch, Spanish, or German program
sequence and reasons for alarm burner shutdown
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A constant flame signal read-out via ED510 message center.
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Read-out of main fuel operation hours, burner cycles, total number of safety shutdowns, and the
reason for the last six safety shutdowns via the ED510 message center.
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A run/check switch which allows the operator to stop the program sequence in any of three dif-
ferent positions (Purge, PTFI, or Auto).
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Selectable purge timings
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Different detection methods for the Flame-Monitor control are:
— infrared
— ultra-violet
— ultra-violet self-check
— flame rectification
with a correspondingly large choice of flame scanner constructions.
DESIGN FEATURES
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Microprocessor based technology.
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Plug-in control unit with “snap-on” protection cover.
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“Burnt-in” electronic circuits eliminating aging and temperature problems.
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Gold-plated plug-in contact fingers
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Accurate timings; watchdog timer to supervise ignition and travel time of modulator motor
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Overload and short-circuit protection
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Built-in self-diagnostic
SPECIFICATIONS
Humidity:
85% RH maximum (non-condensing).
All components epoxy coating sealed.
Operating temperature limits:
CHASSIS
TEMPERATURE
Max.
Min.
EB720
60°C
- 20°C *
EB721
60°C
- 20°C *
Amplifiers, Programmer
60°C
- 20°C *
ED510 Message Center
60°C
0°C *
All UV scanners
100°C
- 20°C *
All infrared scanners
52°C
- 20°C *
* Unit tested down to -20 °C. Minimum operating characteristics, subject to supply voltage changes
